Privacy Function(No Key):Crystal glass door knobs are ideal for your bedroom&bathroom where privacy is needed,and they can be unlocked from the outside using with a hex key in emergency. These high quality bathroom door knobs come in satin brass finish and look great,heavy duty and solid for last using. Glass door knobs interior fit for door thickness from 1-3/8" to 1-3/4"(35-45mm), adjustable latch 2-3/8" or 2-3/4"(60 or 70mm). Suitable for most standard doors, please check the size you need before purchasing. This entry door lock set includes the accessories what you need and installation instructions,you can do it by yourself. After-sales Service: If there is any quality problem with our products or you don't know how to install the items, please don't hesitate to contact us and we'll give you a reasonable solution in 24 hours.We promise you 365-day money back service and technical support. Decorate your home